CA2150999C - Disposable body fluids absorbent padding - Google Patents
Disposable body fluids absorbent paddingInfo
- Publication number
- CA2150999C CA2150999C CA002150999A CA2150999A CA2150999C CA 2150999 C CA2150999 C CA 2150999C CA 002150999 A CA002150999 A CA 002150999A CA 2150999 A CA2150999 A CA 2150999A CA 2150999 C CA2150999 C CA 2150999C
- Authority
- CA
- Canada
- Prior art keywords
- density zones
- high density
- padding
- nonwoven fabric
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
- A61F13/51394—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability creating a visual effect, e.g. having a printed or coloured topsheet, printed or coloured sub-layer but being visible from the topsheet, other than embossing for purposes of bonding, wicking, acquisition, leakage-prevention
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/5116—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers
- A61F2013/51165—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers with the combination of films and nonwovens
Abstract
A disposable body fluids absorbent padding at least comprising a liquid-permeable topsheet, a liquid-impermeable backsheet and a liquid-absorbent core disposed between these two sheets, wherein said topsheet is made of a nonwoven fabric comprising high density zones and low density zones, and said high density zones have strips of liquid-impermeable thermoplastic film bonded to the upper surfaces of said high density zones,
Description
215099~
DISPOSABLE BODY FLUIDS ABSORBENT PADDING
The present invention relates to a disposable body fluids absorbent padding and more particularly, to a disposable body fluids absorbent padding such as a menstruation pad, a diaper for infants, a diaper for incontinence and the like having a topsheet capable of concealing body fluids having been absorbed by a core in the padding.
It is well known to use a hydrophobic nonwoven fabric as material for a topsheet not only to alleviate an uncomfortable feeling of wetness for a wearer's skin due to body fluids but also to enhance a body fluids permeability.
However, this topsheet is generally poor in its capability of preventing the body fluids once having been absorbed by the core from flowing backward (i.e., resulting in rewetting) and often given a wearer the feeling of wetness due to such flowing backward. This topsheet is poor also in capability of concealing the body fluids having been absorbed by the core and, for example, in the case of a menstruation pad, the core smeared with menstrual discharge is often uncomfortably remarkable for a wearer when the used pad is disposed.
In connection with the above-mentioned smear concealing 2150g99 capability of the topsheet, Japanese Laid-Open Patent Application No. Sho 57 - 1340 teaches that it is effective to use a hydrophobic film having openings each of an equivalent hydraulic diameter less than 0.025 inches as the topsheet.
This reference teaches also that a thin layer comprising uniformly distributed fluff pulp or synthetic fiber may be bonded to the inner surface of the film with the thin layer being in contact with the core during use and thereby body fluids permeation to the core may be promoted. However, the film disclosed in this reference is nothing but so-called plastic film presenting the touch falling far short of that presented by a nonwoven fabric and too closely contacting a wearer's skin, often causing stuffiness or eruption.
In view of these problems, it is a principal object of the invention to provide an improved disposable body fluids absorbent padding allowing the above-mentioned problems left behind by the prior art unsolved to be solved by using a topsheet made of a nonwoven fabric comprising high density zones and low density zones, each of said high density zones being provided on its upper surface with a strip of plastic film bonded thereto.
The object set forth above is achieved, according to the invention, by a disposable body fluids absorbent padding at least comprising a liquid-permeable topsheet, a liquid-impermeable backsheet and a liquid-absorbent core disposed between these two sheets, wherein said topsheet comprises a liquid-permeable nonwoven fabric and a liquid-impermeable thermoplastic film integrally bonded to the upper surface of said nonwoven fabric so as to partially expose the upper surface of said nonwoven fabric, and wherein each zone of said nonwoven fabric covered with said plastic film is of a high density while each zone of said nonwoven fabric not covered with said plastic film is of a low density.
Preferably, each of said high density zones presents a density corresponding to 1.4 times or higher than a density presented by each of said low density zones and said high density zones and said low density zones are alternately arranged so as to form a striped pattern.
Preferably, component fibers of said nonwoven fabric in said high density zones are arranged substantially with a desired orientation.
Preferably, said plastic film is substantially translucent or opaque.
In the body fluids absorbent padding constructed as described above, the topsheet is exposed to a wearer's skin in the low density zones but the high density zones are covered with the respective strips of plastic film. Most of discharged body fluids is absorbed through the low density zones into the liquid-absorbent core, then diffuses in a direction of thickness as well as in a direction of the surface of said core. As a result, the core becomes so-called smeared. The core smeared with body fluids is partially covered with the strips of plastic film partially covering the topsheet and therefore the smear is not remarkable. A quantity of body fluids staying in the low density zones is transferred under the capillary action into the high density zones which are also smeared with body fluids but the strips of plastic film covering these high density zones effectively conceal such smear. On the other hand, a quantity of body fluids staying in the low density zones is effectively reduced owing to said transfer and therefore the smear in these low density zones is also not remarkable.
Fig. 1 is a perspective view showing a menstruation pad according to the invention as partially broken away;
Fig. 2 is a sectional view taken along a line X - X in Fig. 1; and Fig. 3 is a plan view showing a variant of a topsheet used in the embodiment shown in Fig. 1.
Details of a disposable body fluids absorbent padding will be more readily understood from the following description of a typical embodiment in the form of a menstruation pad made in reference with the accompanying drawings.
Referring to Fig. 1, a pad 1 comprises a topsheet 2, a backsheet 3 and a liquid-absorbent core 4 disposed between these two sheets 2, 3 wherein the top- and backsheets 2, 3 are water-tightly bonded to each other by a sealing line 5 along their portions extending outward beyond a peripheral edge of the core 4. The topsheet 2 is made of a liquid-permeable nonwoven fabric 7 and provided on its upper surface along longitudinally of the pad 1 with a plurality of strips 8 of substantially translucent or opaque plastic films which are liquid-impermeable or air-permeable but liquid-impermeable and preferably water-repellent. The backsheet 3 is made of a liquid-impermeable plastic film. The liquid-absorbent core 4 is made of fluff pulps mixed with high water absorption polymer powders and this mixture may be further mixed with thermoplastic synthetic fibers or entirely covered with a tissue paper.
Referring to Fig. 2, the nonwoven fabric 7 forming the topsheet 2 comprises transversely alternate longitudinal high and low density zones 10, 11 of width WA~ W~, respectively, which alternate transversely of the pad 1. Each of the high density zones 10 has its upper surface covered with the film strip 8 of the width WA bonded thereto and each of the low density zones 11 has its upper surface exposed to a wearer's skin. The nonwoven fabric 7 preferably comprises 20 to 100%
by weight of thermoplastic synthetic fibers so as to present a weight per unit area of 5 to 200g/m2 wherein the high density zone 10 has a density of 0.03 or higher and the low density zone 11 has a density of 0.005 to 0.4, i.e., the density of the zone 10 is 1.4 times or higher than the density of the zone 11. These densities should be understood here to be apparent densities calculated on the basis of thicknesses which were measure under a surface pressure of 3g/cm2 exerted on the nonwoven fabric. While the pad 1 is shown as having the high density zones 10 and the film strip 8 heat sealed together under a pressure, this sealing may be achieved also with use of suitable adhesive or by disposing other weldable film strips between the high density zones 10 and the film strips 8.
The topsheet 2 has its lower surface 12 in contact with the upper surface 13 of the core 4 so that menstrual discharge may be guided through the topsheet 2 into the core 4. More specifically, menstrual discharge can permeate only the low density zones 11, then is guided into the underlying core 4 having a high water holding capacity as well as into the adjacent high density zones 10, and substantially no quantity of menstrual discharge stays in the low density zones 11. The core 4 as well as the high density zones 10 thus smeared with menstrual discharge are partially or entirely covered with the film strips 8 effectively serving to prevent this smear from being remarkable. The topsheet 2 functioning in this manner will facilitate menstrual discharge to be guided longitudinally of the pad 1 in the density zones 10 and allow the respective high density zones 10 to be effectively utilized from end to end when fibers at least in the high density zones 10 are oriented longitudinally of the pad 1. Additionally, the top surfaces of the low density zones 11 are higher than those of the film strips 8 and form mountain- or wave-like shapes (See Fig. 2).
It is obvious that the pad 1 gives a wearer no feeling of wetness due to the absorbed quantity of menstrual discharge.
Referring to Fig. 3, elliptical low density zones 11 are intermittently arranged in a plastic film 8 which is continuous both in length and width and the high density zone 10 (not shown) bonded to the film 8 that is, the film 8 extends both in length and width and has a plurality of longitudinally long elliptical apertures 14 where the low density zones 11 substantially in the same form as said apertures 14 are positioned, so that menstrual discharge once having been transferred to the high density zone 10 may be further diffused both longitudinally and transversely as viewed in Fig. 3 and thereby the high density zone 10 may be utilized more efficiently than in the case shown by Fig. 1.
While an area ratio between the high density zones 10 and the low density zones 11 in the topsheet 2 is not critical to the invention, it is preferred for menstruation pads or disposable diapers to design so that the high density zones 10 occupy 30 to 70~ of the entire topsheet 2. To alleviate an uncomfortable feeling of wetness given by the topsheet 2 impregnated with menstrual discharge, it is preferred to employ a hydrophobic nonwoven fabric.
Alternatively and/or additionally, a degree of the hydrophobic nature may be appropriately adjusted by a suitable surface treating agent in order to promote permeation as well as diffusion of menstrual discharge or thermoplastic synthetic fibers may be mixed with 3 to 20% by weight of hydrophilic fibers such as fluff pulps. The previous description "the plastic film is substantially translucent or opaque" should be understood to mean that such plastic film will effectively prevent the core as well as the high density zones smeared with menstrual discharge from being seen therethrough. The preferable film includes a colored film and transparent film having an aventurine coated surface.
As will be apparent from the foregoing description, the nonwoven fabric forming the topsheet comprises the high density zones and the low density zones arranged alternately and the high density zones are provided on their upper surfaces with the plastic film bonded thereto so that, even after body fluids have been transferred from the low density zones to the high density zones and the core, the plastic film effectively prevent the high density zones and the core smeared with body fluids being remarkably seen therethrough.
In addition, a quantity of body fluids which may stay in the low density zones is relative small and therefore a wearer can dispose the used padding without uncomfortable feeling.
A substantially translucent or opaque plastic film may be used as said film to enhance the desired concealing effect.
In the respective high density zones, the component fibers of the nonwoven fabric may be arranged with a desired orientation to effectively and entirely utilize each of the - 21~osg~
high density zone.
DISPOSABLE BODY FLUIDS ABSORBENT PADDING
The present invention relates to a disposable body fluids absorbent padding and more particularly, to a disposable body fluids absorbent padding such as a menstruation pad, a diaper for infants, a diaper for incontinence and the like having a topsheet capable of concealing body fluids having been absorbed by a core in the padding.
It is well known to use a hydrophobic nonwoven fabric as material for a topsheet not only to alleviate an uncomfortable feeling of wetness for a wearer's skin due to body fluids but also to enhance a body fluids permeability.
However, this topsheet is generally poor in its capability of preventing the body fluids once having been absorbed by the core from flowing backward (i.e., resulting in rewetting) and often given a wearer the feeling of wetness due to such flowing backward. This topsheet is poor also in capability of concealing the body fluids having been absorbed by the core and, for example, in the case of a menstruation pad, the core smeared with menstrual discharge is often uncomfortably remarkable for a wearer when the used pad is disposed.
In connection with the above-mentioned smear concealing 2150g99 capability of the topsheet, Japanese Laid-Open Patent Application No. Sho 57 - 1340 teaches that it is effective to use a hydrophobic film having openings each of an equivalent hydraulic diameter less than 0.025 inches as the topsheet.
This reference teaches also that a thin layer comprising uniformly distributed fluff pulp or synthetic fiber may be bonded to the inner surface of the film with the thin layer being in contact with the core during use and thereby body fluids permeation to the core may be promoted. However, the film disclosed in this reference is nothing but so-called plastic film presenting the touch falling far short of that presented by a nonwoven fabric and too closely contacting a wearer's skin, often causing stuffiness or eruption.
In view of these problems, it is a principal object of the invention to provide an improved disposable body fluids absorbent padding allowing the above-mentioned problems left behind by the prior art unsolved to be solved by using a topsheet made of a nonwoven fabric comprising high density zones and low density zones, each of said high density zones being provided on its upper surface with a strip of plastic film bonded thereto.
The object set forth above is achieved, according to the invention, by a disposable body fluids absorbent padding at least comprising a liquid-permeable topsheet, a liquid-impermeable backsheet and a liquid-absorbent core disposed between these two sheets, wherein said topsheet comprises a liquid-permeable nonwoven fabric and a liquid-impermeable thermoplastic film integrally bonded to the upper surface of said nonwoven fabric so as to partially expose the upper surface of said nonwoven fabric, and wherein each zone of said nonwoven fabric covered with said plastic film is of a high density while each zone of said nonwoven fabric not covered with said plastic film is of a low density.
Preferably, each of said high density zones presents a density corresponding to 1.4 times or higher than a density presented by each of said low density zones and said high density zones and said low density zones are alternately arranged so as to form a striped pattern.
Preferably, component fibers of said nonwoven fabric in said high density zones are arranged substantially with a desired orientation.
Preferably, said plastic film is substantially translucent or opaque.
In the body fluids absorbent padding constructed as described above, the topsheet is exposed to a wearer's skin in the low density zones but the high density zones are covered with the respective strips of plastic film. Most of discharged body fluids is absorbed through the low density zones into the liquid-absorbent core, then diffuses in a direction of thickness as well as in a direction of the surface of said core. As a result, the core becomes so-called smeared. The core smeared with body fluids is partially covered with the strips of plastic film partially covering the topsheet and therefore the smear is not remarkable. A quantity of body fluids staying in the low density zones is transferred under the capillary action into the high density zones which are also smeared with body fluids but the strips of plastic film covering these high density zones effectively conceal such smear. On the other hand, a quantity of body fluids staying in the low density zones is effectively reduced owing to said transfer and therefore the smear in these low density zones is also not remarkable.
Fig. 1 is a perspective view showing a menstruation pad according to the invention as partially broken away;
Fig. 2 is a sectional view taken along a line X - X in Fig. 1; and Fig. 3 is a plan view showing a variant of a topsheet used in the embodiment shown in Fig. 1.
Details of a disposable body fluids absorbent padding will be more readily understood from the following description of a typical embodiment in the form of a menstruation pad made in reference with the accompanying drawings.
Referring to Fig. 1, a pad 1 comprises a topsheet 2, a backsheet 3 and a liquid-absorbent core 4 disposed between these two sheets 2, 3 wherein the top- and backsheets 2, 3 are water-tightly bonded to each other by a sealing line 5 along their portions extending outward beyond a peripheral edge of the core 4. The topsheet 2 is made of a liquid-permeable nonwoven fabric 7 and provided on its upper surface along longitudinally of the pad 1 with a plurality of strips 8 of substantially translucent or opaque plastic films which are liquid-impermeable or air-permeable but liquid-impermeable and preferably water-repellent. The backsheet 3 is made of a liquid-impermeable plastic film. The liquid-absorbent core 4 is made of fluff pulps mixed with high water absorption polymer powders and this mixture may be further mixed with thermoplastic synthetic fibers or entirely covered with a tissue paper.
Referring to Fig. 2, the nonwoven fabric 7 forming the topsheet 2 comprises transversely alternate longitudinal high and low density zones 10, 11 of width WA~ W~, respectively, which alternate transversely of the pad 1. Each of the high density zones 10 has its upper surface covered with the film strip 8 of the width WA bonded thereto and each of the low density zones 11 has its upper surface exposed to a wearer's skin. The nonwoven fabric 7 preferably comprises 20 to 100%
by weight of thermoplastic synthetic fibers so as to present a weight per unit area of 5 to 200g/m2 wherein the high density zone 10 has a density of 0.03 or higher and the low density zone 11 has a density of 0.005 to 0.4, i.e., the density of the zone 10 is 1.4 times or higher than the density of the zone 11. These densities should be understood here to be apparent densities calculated on the basis of thicknesses which were measure under a surface pressure of 3g/cm2 exerted on the nonwoven fabric. While the pad 1 is shown as having the high density zones 10 and the film strip 8 heat sealed together under a pressure, this sealing may be achieved also with use of suitable adhesive or by disposing other weldable film strips between the high density zones 10 and the film strips 8.
The topsheet 2 has its lower surface 12 in contact with the upper surface 13 of the core 4 so that menstrual discharge may be guided through the topsheet 2 into the core 4. More specifically, menstrual discharge can permeate only the low density zones 11, then is guided into the underlying core 4 having a high water holding capacity as well as into the adjacent high density zones 10, and substantially no quantity of menstrual discharge stays in the low density zones 11. The core 4 as well as the high density zones 10 thus smeared with menstrual discharge are partially or entirely covered with the film strips 8 effectively serving to prevent this smear from being remarkable. The topsheet 2 functioning in this manner will facilitate menstrual discharge to be guided longitudinally of the pad 1 in the density zones 10 and allow the respective high density zones 10 to be effectively utilized from end to end when fibers at least in the high density zones 10 are oriented longitudinally of the pad 1. Additionally, the top surfaces of the low density zones 11 are higher than those of the film strips 8 and form mountain- or wave-like shapes (See Fig. 2).
It is obvious that the pad 1 gives a wearer no feeling of wetness due to the absorbed quantity of menstrual discharge.
Referring to Fig. 3, elliptical low density zones 11 are intermittently arranged in a plastic film 8 which is continuous both in length and width and the high density zone 10 (not shown) bonded to the film 8 that is, the film 8 extends both in length and width and has a plurality of longitudinally long elliptical apertures 14 where the low density zones 11 substantially in the same form as said apertures 14 are positioned, so that menstrual discharge once having been transferred to the high density zone 10 may be further diffused both longitudinally and transversely as viewed in Fig. 3 and thereby the high density zone 10 may be utilized more efficiently than in the case shown by Fig. 1.
While an area ratio between the high density zones 10 and the low density zones 11 in the topsheet 2 is not critical to the invention, it is preferred for menstruation pads or disposable diapers to design so that the high density zones 10 occupy 30 to 70~ of the entire topsheet 2. To alleviate an uncomfortable feeling of wetness given by the topsheet 2 impregnated with menstrual discharge, it is preferred to employ a hydrophobic nonwoven fabric.
Alternatively and/or additionally, a degree of the hydrophobic nature may be appropriately adjusted by a suitable surface treating agent in order to promote permeation as well as diffusion of menstrual discharge or thermoplastic synthetic fibers may be mixed with 3 to 20% by weight of hydrophilic fibers such as fluff pulps. The previous description "the plastic film is substantially translucent or opaque" should be understood to mean that such plastic film will effectively prevent the core as well as the high density zones smeared with menstrual discharge from being seen therethrough. The preferable film includes a colored film and transparent film having an aventurine coated surface.
As will be apparent from the foregoing description, the nonwoven fabric forming the topsheet comprises the high density zones and the low density zones arranged alternately and the high density zones are provided on their upper surfaces with the plastic film bonded thereto so that, even after body fluids have been transferred from the low density zones to the high density zones and the core, the plastic film effectively prevent the high density zones and the core smeared with body fluids being remarkably seen therethrough.
In addition, a quantity of body fluids which may stay in the low density zones is relative small and therefore a wearer can dispose the used padding without uncomfortable feeling.
A substantially translucent or opaque plastic film may be used as said film to enhance the desired concealing effect.
In the respective high density zones, the component fibers of the nonwoven fabric may be arranged with a desired orientation to effectively and entirely utilize each of the - 21~osg~
high density zone.
Claims (7)
1. A disposable body fluids absorbent padding at least comprising a liquid-permeable topsheet, a liquid-impermeable backsheet and a liquid-absorbent core disposed between these two sheets, wherein said topsheet comprises a liquid-permeable nonwoven fabric and liquid-impermeable thermoplastic film integrally bonded to the upper surface of said nonwoven fabric so as to partially expose the upper surface of said nonwoven fabric, and wherein each zone of said nonwoven fabric covered with said plastic film is of a high density while each zone of said nonwoven fabric not covered with said plastic film is of a low density.
2. The padding according to Claim 1, wherein said high density zones and said low density zones are alternately arranged transversely of said padding so as to form a striped pattern extending longitudinally of said padding.
3. The padding according to Claim 1, wherein said high density zones are intermittently arranged transversely and longitudinally of said padding.
4. The padding according to Claim 1, wherein each of said high density zones presents a density corresponding to 1.4 times or higher than a density presented by each of said low density zones.
5. The padding according to Claim 1, wherein component fibers of said nonwoven fabric in said high density zones are arranged substantially with a desired orientation.
6. The padding according to Claim 1, wherein the top surface of said low density zones are higher than that of said film.
7. The padding according to Claim 1, wherein said plastic film is substantially translucent or opaque.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6-124975 | 1994-06-07 | ||
| JP06124975A JP3091361B2 (en) | 1994-06-07 | 1994-06-07 | Disposable body fluid absorbent articles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2150999A1 CA2150999A1 (en) | 1995-12-08 |
| CA2150999C true CA2150999C (en) | 1998-08-04 |
Family
ID=14898851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002150999A Expired - Fee Related CA2150999C (en) | 1994-06-07 | 1995-06-05 | Disposable body fluids absorbent padding |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5578024A (en) |
| EP (1) | EP0686384B1 (en) |
| JP (1) | JP3091361B2 (en) |
| KR (1) | KR0122117Y1 (en) |
| CN (1) | CN2247516Y (en) |
| AU (1) | AU696409B2 (en) |
| CA (1) | CA2150999C (en) |
| DE (1) | DE69525681T2 (en) |
| MY (1) | MY115959A (en) |
Families Citing this family (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3208289B2 (en) * | 1995-08-15 | 2001-09-10 | ユニ・チャーム株式会社 | Disposable absorbent undergarment |
| JP3053561B2 (en) * | 1995-10-19 | 2000-06-19 | ユニ・チャーム株式会社 | Sanitary napkin |
| MY117643A (en) * | 1996-02-29 | 2004-07-31 | Uni Charm Corp | Liquid-permeable topsheet for body exudates absorbent article, apparatus and method for manufacturing same |
| JPH1077566A (en) * | 1996-07-11 | 1998-03-24 | Uni Charm Corp | Nonwoven fabric and its production |
| SE9801038L (en) * | 1998-03-27 | 1999-09-28 | Sca Hygiene Prod Ab | Material laminates for use as surface layers on absorbent articles |
| SE516777C2 (en) * | 1997-12-03 | 2002-02-26 | Sca Hygiene Prod Ab | Absorbent articles with layers of continuous fibers |
| SE514391C2 (en) | 1997-12-03 | 2001-02-19 | Sca Hygiene Prod Ab | Absorbent articles |
| JP2000135239A (en) | 1998-10-30 | 2000-05-16 | Uni Charm Corp | Disposable humor absorption type wearing article |
| JP3595456B2 (en) * | 1999-02-05 | 2004-12-02 | ユニ・チャーム株式会社 | Flexible sheet for disposable wearing articles |
| JP3467428B2 (en) | 1999-06-03 | 2003-11-17 | ユニ・チャーム株式会社 | Liquid-permeable topsheet for body fluid-absorbing article and method for producing the same |
| WO2001019504A2 (en) * | 1999-09-17 | 2001-03-22 | Millipore Corporation | Three dimensional patterned porous structures |
| JP3877923B2 (en) * | 1999-12-28 | 2007-02-07 | ユニ・チャーム株式会社 | Liquid-permeable composite sheet for disposable body fluid absorbent articles |
| JP3744767B2 (en) | 2000-03-27 | 2006-02-15 | ユニ・チャーム株式会社 | Composite sheet |
| JP3933847B2 (en) * | 2000-06-19 | 2007-06-20 | ユニ・チャーム株式会社 | Absorbent articles |
| JP3875007B2 (en) | 2000-09-01 | 2007-01-31 | ユニ・チャーム株式会社 | Absorbent article using surface layer having continuous filament and method for producing the same |
| WO2003013409A1 (en) * | 2001-08-03 | 2003-02-20 | Battelle Memorial Institute | Products with color masking properties |
| JP2003235894A (en) * | 2002-02-22 | 2003-08-26 | Oji Kinocloth Co Ltd | Liquid diffusive sheet |
| AR034469A1 (en) * | 2002-06-11 | 2004-02-25 | Freudenberg S A | A TRANSFER LAYER OF LIQUID FLUIDS AND ABSORBENT ARTICLE THAT INCLUDES IT. |
| JP4369647B2 (en) * | 2002-07-23 | 2009-11-25 | 大王製紙株式会社 | Absorbent articles |
| JP4486300B2 (en) * | 2002-07-25 | 2010-06-23 | ユニ・チャーム株式会社 | Absorbent article top sheet |
| JP3878085B2 (en) * | 2002-08-09 | 2007-02-07 | ユニ・チャーム株式会社 | Disposable body fluid absorbent article |
| US9035123B2 (en) | 2002-10-01 | 2015-05-19 | The Procter & Gamble Company | Absorbent article having a lotioned topsheet |
| US8211815B2 (en) | 2003-06-13 | 2012-07-03 | Kimberly-Clark Worldwide, Inc. | Absorbent structure having three-dimensional topography on upper and lower surfaces |
| US7812213B2 (en) * | 2003-12-29 | 2010-10-12 | Sca Hygiene Products Ab | Absorbent article with through-slits surrounded by binding areas |
| JP4560415B2 (en) | 2005-01-20 | 2010-10-13 | ユニ・チャーム株式会社 | Absorbent articles |
| JP5822381B2 (en) * | 2010-06-10 | 2015-11-24 | 花王株式会社 | Absorber manufacturing method |
| US10864120B2 (en) * | 2014-02-21 | 2020-12-15 | Attends Healthcare Products, Inc. | Absorbent article with fluid control features |
| JP7236406B2 (en) * | 2020-05-29 | 2023-03-09 | ユニ・チャーム株式会社 | absorbent article |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1352539A (en) * | 1962-04-05 | 1964-02-14 | Process for the manufacture of diapers and similar articles and diaper manufactured by this process | |
| US3236238A (en) * | 1963-01-30 | 1966-02-22 | Johnson & Johnson | Sanitary napkin and method of making |
| DE1902695A1 (en) * | 1968-01-22 | 1969-11-27 | Celanese Corp | Body secretions absorbent laminates |
| US4079739A (en) * | 1976-12-27 | 1978-03-21 | Kimberly-Clark Corporation | Die-cut contoured catamenial napkin of multi-layered construction |
| US4324246A (en) * | 1980-05-12 | 1982-04-13 | The Procter & Gamble Company | Disposable absorbent article having a stain resistant topsheet |
| US4397644A (en) * | 1982-02-04 | 1983-08-09 | Kimberly-Clark Corporation | Sanitary napkin with improved comfort |
| SE449285B (en) * | 1984-05-15 | 1987-04-27 | Moelnlycke Ab | ABSORBING PRODUCT, SUCH AS BLOW, BINDING OR SAR SURFACE |
| US4781962A (en) * | 1986-09-09 | 1988-11-01 | Kimberly-Clark Corporation | Composite cover material for absorbent articles and the like |
| EP0489205B1 (en) * | 1990-12-04 | 1996-03-13 | Kang Na Hsiung Enterprise Co. Ltd. | An absorbent padding material |
| JP3061485B2 (en) * | 1992-09-07 | 2000-07-10 | 三井化学株式会社 | Surface sheet for body fluid absorbent articles |
| JP2963289B2 (en) * | 1992-11-30 | 1999-10-18 | ユニ・チャーム株式会社 | Surface sheet for body fluid absorbent articles |
-
1994
- 1994-06-07 JP JP06124975A patent/JP3091361B2/en not_active Expired - Lifetime
-
1995
- 1995-06-01 AU AU20446/95A patent/AU696409B2/en not_active Ceased
- 1995-06-05 CA CA002150999A patent/CA2150999C/en not_active Expired - Fee Related
- 1995-06-05 US US08/461,906 patent/US5578024A/en not_active Expired - Lifetime
- 1995-06-06 MY MYPI95001485A patent/MY115959A/en unknown
- 1995-06-07 CN CN95215205U patent/CN2247516Y/en not_active Expired - Lifetime
- 1995-06-07 EP EP95303914A patent/EP0686384B1/en not_active Expired - Lifetime
- 1995-06-07 KR KR2019950012802U patent/KR0122117Y1/en not_active IP Right Cessation
- 1995-06-07 DE DE69525681T patent/DE69525681T2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07328061A (en) | 1995-12-19 |
| KR960000465U (en) | 1996-01-17 |
| KR0122117Y1 (en) | 1998-07-15 |
| AU696409B2 (en) | 1998-09-10 |
| US5578024A (en) | 1996-11-26 |
| MY115959A (en) | 2003-10-31 |
| EP0686384A3 (en) | 1997-10-08 |
| JP3091361B2 (en) | 2000-09-25 |
| EP0686384A2 (en) | 1995-12-13 |
| CN2247516Y (en) | 1997-02-19 |
| DE69525681D1 (en) | 2002-04-11 |
| AU2044695A (en) | 1995-12-14 |
| EP0686384B1 (en) | 2002-03-06 |
| DE69525681T2 (en) | 2002-10-17 |
| CA2150999A1 (en) | 1995-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2150999C (en) | Disposable body fluids absorbent padding | |
| KR950005342B1 (en) | Flow distribution system for absorbent pads | |
| US5846231A (en) | Disposable absorbent article | |
| EP0685214B1 (en) | Disposable body fluids absorbent padding | |
| EP0962208B1 (en) | Absorbent article | |
| EP0523107B1 (en) | A sanitary napkin or incontinence guard | |
| KR100821824B1 (en) | Disposable diaper | |
| EP1055403B1 (en) | Absorbent article with surface structure | |
| KR100667713B1 (en) | Absorbent article having cushion layer | |
| US4397645A (en) | Disposable absorbent article having an improved liquid containment construction | |
| US7628777B2 (en) | Absorbent article having passage holes in a central region | |
| AU597683B2 (en) | Disposable liquid-absorbent | |
| KR100245352B1 (en) | Absorbent article having rapid distribution strip | |
| KR100474145B1 (en) | Disposable wear absorbent articles | |
| KR19990078282A (en) | Topsheet for body fluids absorbent article | |
| JPH028736B2 (en) | ||
| EP0826353B1 (en) | Absorbent product | |
| US6635040B1 (en) | Elastic sided absorbent pad with soft comfortable side panels | |
| EP1219275B1 (en) | Body fluid absorbent wearing article | |
| JPH10243963A (en) | Disposable diaper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20150605 |